Shoe-maker s jack



(No Model.) 3 Sheets-Sheet 1,

J. B; LITOHM-AN. SHOEMAKERS JACK No. 453,401. a Patented June 2, 1891. v

WITNESSES- w w N (No Model.) 3 Sheets-Sheet 2.

J. B. LITOHMAN.

SEOEMAKBRS JACK. No. 453,401. Patented June 2, 1891.

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(No Model.)

3 Sheets-Sl1eet 3. J. 'B. LITGHMAN.

SHOEMAKERS JACK.

No. 453,401. Patented June 2,1891.

WI NEEEE UNITED STATES PATENT OFFICE.

JOHN B. LITCl-IMAN, OF MARBLEHEAD, MASSACHUSETTS.

SHOE-MAKERS JACK.v

SPECIFICATION forming part of Letters Patent No. 453,401, dated June 2, 1891.

A pplication filed March 20, 889. $erial No. 304,018. (No model.)

To all whom it nmy'conccrn:

Be it known that 1, JOHN B. LITCHMAN, of Marblehead, in the county of Essex and State of Massachusetts, a citizen of the United States, have invented a new and useful Improvement in Shoe-Makers Jacks, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming a part of this specification, in explaining its nature.

The invention is in some particulars an improvement upon that described in my patent, No. 331,414, dated December 1, 1885; and it relates especially to the manner of attaching the last to the jack-post, to the construction of the last, whereby this is possible, and to certain other details of construction, all of which will hereinafter be described.

Referring to the drawings, Figure 1 represents, partly in side elevation and partly in section, my improved invention. Fig. 2 is an end View thereof. Fig. 3 is a view in front elevation representing the jack as turned to a horizontal position. Figs. 4. and 5 are views of the last. Figs. 6, 7, and 8 are detail views, to which reference is hereinafter made.

In the drawings, A is a standard or post adapted to be fastened to a bench or other suitable support.

B is a hanger movable vertically upon the arm B, and which supports the jack 0, and is attached to the standard or post and adjustable or movable thereon in the manner described in my said patent.

The jack 0 comprises the post 0, preferably made of metal, having the'shoulder c, which rests upon the upper arm 17 of the bracket B, and the spindle 0 which passes through the holes b in the arm I) of the bracket, a hole b in the arm 19 of the bracket, and is adapted to rest upon or come in contact with the bed or upper surface 12 of a stationary bracket b belted or otherwise attached to the edge of the standard or post A. The spindle 0 serves to secure the jack-post C to the bracket to permit the post to be rotated upon a vertical axis in relation to the bracket, and also provides a means of firmly supporting the jack when in a vertical position by resting or hearing upon the bed or surface of the stationary bracket b. To look the jack-post to its supporting-bracket B in any required position, I employ a set-screw I), which is carried by the arm b of the bracket B and is adapted to be screwed against the spindle 0 The main part of the jack-post G is preferably made hollow or provided with an interior cavity 0 and there is a narrow or long opening 0 through the front of the jack-post to this cavity, and in this opening 0 is secured, by means of a pivot 0 a latch 0. This latch has the thumb-piece or arm 0 by which it is moved, and has the latch c at'its upper end, which preferably is formed substantially as represented in Fig. 1that is, with the rounded corner a and the inclined under edge 0 A spring 0 serves to keep the inner end of the latch always in operative position to engage the catch of the last.

D is the last. It may be of wood or of metal. It preferably is of metal. It has extending from its top surface a wedge-spindle cl. This spindle preferably has the rounded front lower corner d and is inclined or tapered from the point or line at to the surface of the last, (see Fig. 1,) and is also wedge-shaped in crosssection, being wider at the front than at the rear, and it is of a size to enter the upper end of the cavity 0 of the jack-post. This cavity has practically the shape of the spindlethat is, it has the tapered or inclined surface 61 corresponding to the tapered or inclined section d of the spindle, and is otherwise of the shape of the spindle. The spindle also has a catch or latching-recess d to receive the latch 0 The upper edge of this recess preferably is rounded, and the lower edge preferably is of such shape that the inward movement of the latch 0 causes its inclined under edge e to bear against the under surface of the latching-recess and draw the last downward firmly upon the upper surface d of the jack-post. This construction provides for a wearing end for both the last-spindle and the latching device. It will be observed that the surface (1 of the last about the spindle is flat and of a size to provide a firm rest upon the top of the jack-post.

' In Fig. 5 I have represented the spindle d as secured to a wooden last, and in this case it is of course of metal, and is provided with the plate 6, by which it is secured to the Wooden last by means of screws or other fastenings, and the surface 6' of which forms the part of the last which comes in contact with the top of the jack-post. I

Having thus fully described my invention, I claim and desire to secure by Letters Patent of the United States 1. The improved shoe-makers jack having the adjustable hanger B, the jack 0, having a latch c of the character specified, and an end opening a, with a last having the spindle and latching-recess (1 substantially as described.

2. The improved shoe-makers jack comprising a post or support A, the adjustable bracket B, pivoted to the upper end of the post and having the arms b the jack-post 0, having the spindle 0 extending through holes in said arms to rest upon the bed 12 secured to said post A and the said bed (1 as and for the purposes described.

3. The combination of the jack-post C, having a slot upon one side, in which is a latch c, the said latch having the end a provided with the inclined edge 0 the operating-arm 0 the spring 0 and the last-spindle having a latch-recess d", with an inclined or tapering lower surface, against which the inclined surface of the latch comes in contact, substantially as described.

4. The combination of a jack-post having a flat upper surface at, an opening of the character specified extending from said surface downwardly to a cross-opening, a latch contained in said cross-opening and arranged to shut into the said first-named recess 01' opening, a last having a spindle of the character specified to fit the said first named opening, and a latching-recess to receive the latch, as and for the purposes described.

JOHN B. LITOIIMAN. Witnesses:

JOHN DENNING, F. F. RAYMOND, 2d. 

